Immunology And Immunotherapy

Infections & Disease

An infection occurs when germs enter the body, increase in number, and cause a reaction of the body. Three things are necessary for an infection to occur: Source: Places where infectious agents (germs) live (e.g., sinks, surfaces, human skin) Susceptible Person with a way for germs to enter the body. Infections are caused by germs that enter the body, multiply, and cause harm or illness. The main types of germs that can cause infections are: Bacteria,Viruses.

Infectious diseases are disorders caused by organisms, such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person

Causes of infection:-

Airborne, blood borne, sexually transmitted, fecal, oral, environment, stagnant water, warm-water systems, animals